Steam-generator.



(No Model.)

H. A. BUCK.

STEAM GENERATOR.

(Application filed Oct. 4, 1899.)

Patented luly l0, I900.

3 SheetsSheet I.

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(n Modem pp ation filed cat. 4, 1899.)

Patented July l0, I900.

3 Sheets-Sheet 2,

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No. 653,436. Patented July 10, I900. H. A. BUCK.-

STEAM GENERATOR.

(Application filed Oct. 4, 1899.) (No Model.) 3 Sheets-Sheet 3.

MIME T01? WITNESSES:

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NTijED STATES" HENRY ALONZO BUCK, OF LONDON, ENGLAND.

STEAM-G EN ERATOR.

SIEECIFICATION forming part of Letters Patent No. 653,436, dated July 10, 1900.

Application filed October 4,1899.

T0 at whom it may concern.-

Be it known that I, HENRY ALoNzo BUCK, engineer, a citizen of the United States of America, residing at 11 Montague street, Russell Square, London, England, have invented certain new and useful Improvements in Steam-Generators; andI do hereby declare the following to be a full, clear, and exact description thereof.

In carrying the invention into effect I construct a boiler of any well-known form, but preferably multitubular, and heated in the usual manner; but instead of utilizing water under atmospheric pressure the boiler isfilled with water under hydraulic pressure when the heat is applied. The pressure upon the water is obtained and regulated by means of a hydraulic accumulator inserted between the feed-water pump and the boiler and is so arranged that by means of a lever or levers the steam-supply to the feed-pump is governed by the ram of the accumulator to which the said lever or levers, as the case may be, is or are attached, and by this means it is possible to regulate the feed to the boiler automatically, more or less water being fed thereto according to the quantity supplied to the engine. The feed to the engine is so arranged that the water may either be fed to the cylinder or when the engine is not running it may be returned to, the boiler, being preferably drawn therefrom at the top and returned thereto at a point below the feedopening. The tubing for the feed may be hydraulic tubing, and it, as well as the feedwater tube and the return from the engine and the engine-cylinder, or cylinders in the case of a compound engine, are incased in a suitable jacket, within which circulate the hot products of combustion from the fire-box, the jacket being incased externally with some non-heat-conduc'ting material, thereby utilizing to the fullestpractical extentthe heat of the said products. A door or valve is provided whereby the said products may either be led to the shaft or chimney from the jacket surrounding the feed-water and othertubes aforesaid or the conduct leading therefrom may be closed and the heated waste gases allowed to circulate around the Serial No. 732,527. (No model.)

engine. or engine-cylinders before reaching the shaft, thereby heating the said cylinders, so that upon the admission of the water thereto and its conversion into steam the heat of the cylinder will help to maintain the steam-pressure, which is dependent upon the heat of the water in the boiler, the quantity of Water admitted to the cylinder, and the temperature of the said cylinder, it being understood that the said temperature is kept below that point at which perfect lubrication may be maintained. The exhaust-steam upon leaving the engine may be condensed by any suitable form of condenser, and the water of condensation is drawn therefrom by the feed-pump to the boiler and returned thereto, as aforesaid, through the accumulator.

In order that the invention may be the bet ter understood, I have appended the accompanying drawings, illustrating one form of arrangement of a steam-gen eratin g plant embodying my invention.

Figure 1 is a sectional elevation showing the arrangement of the boiler and the conduits for the heated waste gases from the boiler. Fig. 2 is a plan with the top of the conduits removed, also showing the general arrangement of the plant. Fig. 3 is an elevational view of an arrangement whereby the feed to the boiler is governed by the ram of the hydraulic accumulator. Fig. 4 is a sectional View of one form of a device for delivering a predetermined quantity of water to the engine-cylinder.

Referring to the drawings, 1 is the generator,- which, as aforesaid, may be and is prefdescribed, the water may be either admitted to the engine-cylinder or it may when the engine is not running be returned to the boiler, entering the same at or near the bottom thereof. It will be seen on reference to the drawings that the jacket 3 is provided with a door or trap 6, Fig. 1, operable by the handle 7, Fig. 2, by which means the heated gases are either led through the flue 8 into the shaft 9 or when the door is in a horizontal position the gases pass along and circulate around the engine 10, located in the chamber 11 at the base of the shaft, thereby heating the cylinder or cylinders, as the case may be, and assisting in the conversion of the water into steam and assisting in the maintenance of the temperature of the steam when the same is introduced therein, and thereby preventing condensation. The feed-water for the boiler is fed thereto through the tube 12, which tube is inclosed in the hot-air jacket 3 and is preferablyprovided with a number of bends, as shown in Fig. 2, and it is connected to the hydraulic accumulator 13, to which water is supplied by the feed-pu mp 14, for which steamis obtained by means of the tube 15,communicating with the expansion-chamber 16, to which water is admitted through the cook 17 and upon its admission to the chamber is by its own high temperature converted into steam. The water is preferably drawn from the return portion of the tube 2 by means of the branch tube aforesaid, its admission to the chamber 16 being regulated by the cock 17. To maintain an equal supply of water to the boiler, a cock 19 is inserted in the tube 15 between the pump and the expansionchamber, and by means of the lever 15, (see also Fig. 3,) connected to the handle of the cock and the ram of the accumulator, the supply of steam to the pump, and thereby the feed to the boiler, is regulated.

20, Fig. 2, is a condenser to which the exhaust-steam from the engine is led through the tube 21, and which condenser is provided with the usual suction 22 and overflow pipes 23, and the pump 24 (indicated in Fig. 2 by dotted lines) is driven by steam drawn from the expansion-chamber through the tube 25. The exhaust from the boiler feed-pump and air-pump is led to the condenser by tubes 26 27, the condensed steam passing from the condenser 20 into a hot-well 28, from whence the water is drawn by the boiler feed-pump through the tube 29 and passes through the accumulator 13, through the tube 12, to the boiler 1. In addition to the hot-well 1 provide a storage-tank 30, to which the blow-off from the boiler passes by means of the tube 31, and which storage-tank is connected to the hot-well through the pipe 32, provided with a cook 33, by which the communication between the hot-well and said tank may be cut of]? when desired. It is therefore possible with this arrangement, if so desired, to allow the feed-pu mp to run while the engine is at rest, the water either overflowing through the safety-valve 31- or it may be allowed to flow through the by-pass 35, in which is inserted the cook 36, in either case going to the storage-tanlgthen to the l1ot-well,from whence it is drawn and again returned to ihe boiler, as before described.

Referring to Fig. 4, in which is shown a device for delivering a predetermined quantity of water to an engine-cylinder, the engine in the figure referred to being a simple reciprocating engine, 37 is the cylinder, in which are formed the usual ports, the upper port being indicated by dotted lines 38 and the cylinder-cover being removed. 5 is the outer shell of the valve, consisting of a plug 30, in which is formed a chamber 40 capable of containing a certain definite quantity of water and being provided with a lever tl atone end of the plug, which lever has a movable handle 42, whereby the plug may be actuated by hand and caused to make a quarter-turn to give the necessary initial charge or charges to the cylinder when starting the engine. W'hcn the engine is running, the handle may be removed from the pin 43 (shown dotted in Fig. 4) and the lever actuated by means of the lever 44 or levers, (according to the construction and form of the engine to which the valve is applied,) which would be attached to and actuated by some convenient part of the said engine.

It will be understood that although I have described a method of arrangingthe elements of a steam-generating plant I do not in any way desire to limit myself to such specified arrangement, or do I desire to limit myself to the precise form of Valve for delivering the heated water to the cylinder, as the details of such valve would of necessity be varied to suit the various forms of steam-motors capable of being employed in conjunction with the present method of steam generation. I should also state that as it is desirable that no steam be generated in the boiler thehydraulic pressure thereon is somewhat in excess of the steam-pressure, corresponding to the temperature of the water.

Having now particularly described and as certained the nature of my said invention and in what manner the sameis to be performed, I declare that what I claim is- 1. In combination, an engine, a boiler, a pipe leading from the boiler to the engine having a return to the boiler, a cock adapted to cut off the supply to the engine, a supplychamber having a connection to the boiler, and a storage-tank adapted to receive the overflow-discharge from the boiler, having a controlled passage to said supply-chamber, substantially as described.

2. In combination, an engine, a boiler, a

pipe for conveying hot Water from the boiler from the expansion-chamber back to the con 10 to the engine, a condenser connected with denser, substantially as described. the engine, ahot-weli connected with the con- In witness whereof I have hereunto set my denser, a, pipe leading from the hot-well to hand in presence of two witnesses.

5 the boiler, a pump for forcing the water from the hot-well to the boiler, a pipe for supply- HENRY ALONZO BUCK ing the pump, an expansion-chamber 16 in Witnesses: said pipe, a pipe leading from the pump back JOHN H. J AOK,

to the condenser and a second pipe leading EDMUND H. HARBERD. 

